Patents by Inventor Chih-Feng Lin

Chih-Feng Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9792879
    Abstract: A display system that includes a display panel and a display device is provided. The display panel has display pixels each of the display pixels including two sub display pixels. The driving device includes a mode detection unit, a 1-D sub-pixel rendering unit and a 2-D sub-pixel rendering unit. The mode detection unit determines whether a predetermined condition of the first frame is met. The 1-D sub-pixel rendering unit generates first display pixel values when the predetermined condition is not met. The 2-D sub-pixel rendering unit generates second display pixel values when the predetermined condition is met. Either the first display pixel values or the second display pixel values are generated to be outputted to the display panel and are displayed by the display pixels.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 17, 2017
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Chih-Feng Lin
  • Patent number: 9742292
    Abstract: A multifunction power conversion device for dynamical detection includes an input filter unit, a transformer, a switching transistor, a driving controller, a feedback unit and an output unit. Two sensing signals from the primary and auxiliary coils of the transformer form a current sensing zero detection signal. The digital control unit of the driving controller determines if a current flowing through a secondary coil of the transformer is reduced to zero due to discharging, and further finds valley of the current of the secondary coil. The switching transistor is turned on after a preset number of the valley and then turned off by a process of current sense. Therefore, the present invention greatly reduces switching loss, increases efficiency of power conversion, and particular, enhances flexibility of application to meet actual requirements by simply updating program executed by the digital control unit.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 22, 2017
    Assignee: INNO-TECH CO., LTD.
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Chih Feng Lin
  • Publication number: 20170214322
    Abstract: Disclosed is an isolated power conversion system for providing a function of isolated power conversion by converting an AC power into a DC output power, and a rectifying unit, a transformer, a switching transistor, a first pulse width modulation (PWM) controller, a second PWM controller, an output unit and a signal blocking unit are included. The signal blocking unit is employed as a connection interface between the first and second PWM controllers to provide digital signal for communication. Noise margin and stability of electrical operation are improved to avoid malfunction. Overall, the present invention greatly enhances stability of power conversion and secures quality of electrical signal.
    Type: Application
    Filed: July 28, 2016
    Publication date: July 27, 2017
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Wen-Yueh Hsieh, Chih Feng Lin
  • Publication number: 20170162170
    Abstract: A display system that includes a display panel and a display device is provided. The display panel has display pixels each of the display pixels including two sub display pixels. The driving device includes a mode detection unit, a 1-D sub-pixel rendering unit and a 2-D sub-pixel rendering unit. The mode detection unit determines whether a predetermined condition of the first frame is met. The 1-D sub-pixel rendering unit generates first display pixel values when the predetermined condition is not met. The 2-D sub-pixel rendering unit generates second display pixel values when the predetermined condition is met. Either the first display pixel values or the second display pixel values are generated to be outputted to the display panel and are displayed by the display pixels.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 8, 2017
    Inventor: Chih-Feng LIN
  • Publication number: 20170117809
    Abstract: A multifunction power conversion device for dynamical detection includes an input filter unit, a transformer, a switching transistor, a driving controller, a feedback unit and an output unit. Two sensing signals from the primary and auxiliary coils of the transformer form a current sensing zero detection signal. The digital control unit of the driving controller determines if a current flowing through a secondary coil of the transformer is reduced to zero due to discharging, and further finds valley of the current of the secondary coil. The switching transistor is turned on after a preset number of the valley and then turned off by a process of current sense. Therefore, the present invention greatly reduces switching loss, increases efficiency of power conversion, and particular, enhances flexibility of application to meet actual requirements by simply updating program executed by the digital control unit.
    Type: Application
    Filed: February 19, 2016
    Publication date: April 27, 2017
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Chih Feng Lin
  • Publication number: 20170025052
    Abstract: A display system includes a sub-pixel rendering unit, a detection unit, a compensation unit, and a data re-arrangement unit. The sub-pixel rendering unit is configured to generate first pixel values for pixels according to a video signal. The detection unit is configured to detect whether at least one of predetermined conditions is present in a content of the video signal, so as to generate a control code. The compensation unit is configured to generate a second pixel values for the pixels according to the video signal and the control code. The data re-arrangement unit is configured to selectively output at least one of the first pixel values and the second pixel values to the pixels according to the control code.
    Type: Application
    Filed: July 23, 2015
    Publication date: January 26, 2017
    Inventor: Chih-Feng LIN
  • Patent number: 9526983
    Abstract: A virtual reality avatar traveling control system comprising: at least one body location sensing apparatus, for providing body location information according to body locations of a user; a body location determining apparatus, for computing a location for a first limb of the user according to the body location information; and a moving deciding apparatus, for deciding a moving speed level and a moving direction of an avatar according to the location for the first limb, to thereby generate at least one moving parameter.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: December 27, 2016
    Inventor: Chih-Feng Lin
  • Patent number: 9506625
    Abstract: A light source module adapted for a signboard having a light emitting surface is provided. The light source module includes a base, at least one light source, at least one first reflective structure, and at least three second reflective structures. The base has a bottom and at least one side surface. The side surface is adjacent to the bottom and disposed between the bottom and the light emitting surface. The first reflective structure is adjacent to the side surface and far away from the bottom. The second reflective structures are disposed on the bottom. Part of the light beams provided by the light source ejects from the light emitting surface after reflected by one of the second reflective structures. Another part of the light beams ejects from the light emitting surface after reflected by the first reflective structure and one of the second reflective structures sequentially.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: November 29, 2016
    Assignees: Cal-Comp Electronics & Communications Company Limited, Kinpo Electronics, Inc.
    Inventors: Yen-Hsiang Huang, Chih-Feng Lin, Chun-Min Wang
  • Publication number: 20160344282
    Abstract: A power factor correction control device for dynamically sensing and boost regulation includes a rectifying unit, a transformer, a digital regulation controller, a driving element, a sensing resistor, an output diode and an output capacitor. The control device converts an AC input power into a DC output power so as to supply an external load. The transformer includes a primary coil and an auxiliary coil, the controller employs an auxiliary voltage from the auxiliary coil to calculate the current input voltage and the current output voltage to implement feedback control for the driving element. The driving element is thus turned on and off by the controller to achieve boost function such that the output voltage is greater than the input voltage. The present invention obtains the input voltage and the output voltage by calculation without any sensing resistor, thereby reducing power consumption and increasing power conversion efficiency.
    Type: Application
    Filed: August 20, 2015
    Publication date: November 24, 2016
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Chih Feng Lin, Wen-Yueh Hsieh
  • Patent number: 9489880
    Abstract: A method for driving a display device is disclosed. Each pixel of the display device includes a first sub-pixel and a second sub-pixel. The method includes: driving the first sub-pixel of a first pixel disposed in a first column and in a first row to display a first color; driving the second sub-pixel of the first pixel to display a second color; driving the first sub-pixel of a second pixel disposed in the first column and in a second row or a third row to display a third color; driving the second sub-pixel of the second pixel to display the first color; and determining a pixel value of the first sub-pixel of the first pixel according to a predetermined region, the pixels adjacent to the first pixel, and a video signal.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: November 8, 2016
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Chih-Feng Lin
  • Patent number: 9373997
    Abstract: A power converting apparatus with dynamical driving adjustment includes a rectifying unit, a power factor correction unit, a power conversion unit and a feedback unit. The rectifying unit rectifies an AC input power to generate and transfer a DC power to the power factor correction unit for performing power factor correction. A power factor correction power is generated and transferred to the power conversion unit. The feedback unit is electrically connected to the power conversion unit to form a closed control loop. A PWM driving controller of the power conversion unit performs an adjustment process to control a switching transistor based on a feedback signal from the feedback unit, and the power conversion unit converts the power factor correction power into an output power supplied to an external load. Thus, the margin for electromagnetic interference is increased, and both switching loss and conduction loss are considerably reduced.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: June 21, 2016
    Assignee: INNO-TECH CO., LTD.
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Chih Feng Lin, Wen-Yueh Hsieh
  • Publication number: 20160169479
    Abstract: A light source module adapted for a signboard having a light emitting surface is provided. The light source module includes a base, at least one light source, at least one first reflective structure, and at least three second reflective structures. The base has a bottom and at least one side surface. The side surface is adjacent to the bottom and disposed between the bottom and the light emitting surface. The first reflective structure is adjacent to the side surface and far away from the bottom. The second reflective structures are disposed on the bottom. Part of the light beams provided by the light source ejects from the light emitting surface after reflected by one of the second reflective structures. Another part of the light beams ejects from the light emitting surface after reflected by the first reflective structure and one of the second reflective structures sequentially.
    Type: Application
    Filed: April 21, 2015
    Publication date: June 16, 2016
    Inventors: Yen-Hsiang Huang, Chih-Feng Lin, Chun-Min Wang
  • Publication number: 20160134193
    Abstract: A power control apparatus with dynamical adjustment of driving capability for converting an input power into an output power includes a transformer, a switch transistor connected to the transformer, a pulsed width modulation (PWM) driving controller generating a PWM signal and connected to the switch transistor, an isolation element, an output diode and an output capacitor. The first side coil of the transformer and the switch transistor are connected to the input power, the second side coil of the transformer is connected to the output diode and further connected to the output capacitor and an external load. The isolation element converts the output power into a feedback signal providing the PWM driving controller to dynamically control the PWM driving signal through adjustment so as to implement the optimal turn-on current for the switch transistor. Therefore, electrical performance and conversion efficiency are greatly improved by reducing the switching loss.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 12, 2016
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Chih Feng Lin, Wen-Yueh Hsieh
  • Patent number: 9331585
    Abstract: A power control apparatus with dynamical adjustment of driving capability for converting an input power into an output power includes a transformer, a switch transistor connected to the transformer, a pulsed width modulation (PWM) driving controller generating a PWM signal and connected to the switch transistor, an isolation element, an output diode and an output capacitor. The first side coil of the transformer and the switch transistor are connected to the input power, the second side coil of the transformer is connected to the output diode and further connected to the output capacitor and an external load. The isolation element converts the output power into a feedback signal providing the PWM driving controller to dynamically control the PWM driving signal through adjustment so as to implement the optimal turn-on current for the switch transistor. Therefore, electrical performance and conversion efficiency are greatly improved by reducing the switching loss.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: May 3, 2016
    Assignee: INNO-TECH CO., LTD.
    Inventors: Shu-Chia Lin, Ching-Yuan Lin, Chih Feng Lin, Wen-Yueh Hsieh
  • Patent number: 9323261
    Abstract: An internal voltage generating apparatus is provided. A regulating unit detects whether an internal voltage is lower than a threshold voltage, and outputs a compensation current provided by a first power pad to a second power line connected with a second power pad when the internal voltage is lower than the threshold voltage, so as to regulate the internal voltage provided by the internal voltage generating apparatus.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: April 26, 2016
    Assignee: Winbond Electronics Corp.
    Inventors: Chih-Feng Lin, Kuen-Huei Chang
  • Publication number: 20160063908
    Abstract: A method for driving a display device is disclosed. Each pixel of the display device includes a first sub-pixel and a second sub-pixel. The method includes: driving the first sub-pixel of a first pixel disposed in a first column and in a first row to display a first color; driving the second sub-pixel of the first pixel to display a second color; driving the first sub-pixel of a second pixel disposed in the first column and in a second row or a third row to display a third color; driving the second sub-pixel of the second pixel to display the first color; and determining a pixel value of the first sub-pixel of the first pixel according to a predetermined region, the pixels adjacent to the first pixel, and a video signal.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 3, 2016
    Inventor: Chih-Feng LIN
  • Patent number: 9276481
    Abstract: A power control device for dynamically adjusting frequency includes an electric transformer, a controller, a loading feedback unit, and a switching transistor. The electric transformer includes a first side induction coil connected to an input power unit, a second side induction coil connected to a loading unit to generate an output power by electromagnetic induction with the first side induction coil, and an auxiliary induction coil generating a power sensing signal by electromagnetic induction with the first side induction coil. The loading feedback unit generates a loading feedback signal. The controller determines the level of loading based on the loading feedback signal and further detects the valleys of the power sensing signal so as to change the switching signal which controls the switching transistor at the optimal one of the valleys.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: March 1, 2016
    Assignee: INNO-TECH CO., LTD.
    Inventors: Ching-Yuan Lin, Shu-Chia Lin, Chih Feng Lin
  • Publication number: 20160048146
    Abstract: An internal voltage generating apparatus is provided. A regulating unit detects whether an internal voltage is lower than a threshold voltage, and outputs a compensation current provided by a first power pad to a second power line connected with a second power pad when the internal voltage is lower than the threshold voltage, so as to regulate the internal voltage provided by the internal voltage generating apparatus.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 18, 2016
    Inventors: Chih-Feng Lin, Kuen-Huei Chang
  • Publication number: 20150352441
    Abstract: A virtual reality avatar traveling control system comprising: at least one body location sensing apparatus, for providing body location information according to body locations of a user; a body location determining apparatus, for computing a location for a first limb of the user according to the body location information; and a moving deciding apparatus, for deciding a moving speed level and a moving direction of an avatar according to the location for the first limb, to thereby generate at least one moving parameter.
    Type: Application
    Filed: August 21, 2014
    Publication date: December 10, 2015
    Inventor: Chih-Feng Lin
  • Patent number: 9197213
    Abstract: A level shifter includes a voltage converter having an input and an output coupled to a first node, a transistor coupled between a power node and a third node and having a gate coupled to the first node, a transistor coupled between a fourth node and a reference node and having a gate coupled to the first input node, a voltage converter having an input coupled to a second input node and an output coupled to a second node, a transistor coupled between the power node and the fourth node and having a gate coupled to a second node, a transistor coupled between the third node and the reference node and having a gate coupled to the second input node, a third inverter coupled between the third node and the fourth node and an fourth inverter coupled between the third node and the fourth node.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: November 24, 2015
    Assignee: WINBOND ELECTRONICS CORP.
    Inventor: Chih-Feng Lin